https://www.rbc.ru/newspaper/2021/12/22/61c1a9509a79476aa5e6b2cf
http://www.kasparov.ru/material.php?id=61C19701BA317
https://edition.cnn.com/2021/12/19/politics/joe-biden-russia-ukraine-obama-2014/index.html
https://zn.ua/ukr/international/novi-pretenziji-putina-choho-shche-vin-khoche-vid-ukrajini.html
https://novayagazeta.ru/articles/2021/12/17/napadete-nakazhem
https://theins.ru/history/247176
https://www.ng.ru/world/2021-12-16/1_8329_sanctions.html